She said, “How you make your opponentThe rapper of the moment?” His style, he don’t own it

Common refers to the most (ahem) common criticism of his actions in this beef, which is that he’s lashing out at someone popular just for the attention.

Common’s reply to that notion is that Drake is a hypocrite and a biter who needs to be called out, as he does in the next lines

The Chi-town native has a point here — Drake has often (and with some justice) been accused of borrowing large chunks of his style from Big Sean and Phonte (to whom he went so far as to dedicate an award)